PerformanceAnything relating to tyres, exhausts, suspension, strut braces, air filters, brake pads & discs and any other performance related items.Sat, 25 May 2019 13:25:09 +0000Sat, 25 May 2019 13:25:09 +0000BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.orghttps://zroadster.org/forums/performance.16/
E89 performance programming/chipsSat, 27 Apr 2019 12:08:16 +0000https://zroadster.org/threads/e89-performance-programming-chips.28002/
https://zroadster.org/threads/e89-performance-programming-chips.28002/invalid@example.com (gmcq1956)gmcq1956Tip of the day - InjectorsWed, 17 Apr 2019 17:15:24 +0000https://zroadster.org/threads/tip-of-the-day-injectors.27858/
https://zroadster.org/threads/tip-of-the-day-injectors.27858/invalid@example.com (Southernboy)Southernboy
All the O rings and micro filters were replaced as well as the flow rates and spray patterns tested and checked.
The beauty of it is that after I re-fitted them earlier today, I went off to the shops for some fruit & vegs.
To say I was pleasantly surprised would be understated. I had been contemplating pulling the Throttle body out and having it tested. I was thinking the...

Tip of the day - Injectors]]>2Tip of the day - Fuel PumpsFri, 12 Apr 2019 07:21:27 +0000https://zroadster.org/threads/tip-of-the-day-fuel-pumps.27797/
https://zroadster.org/threads/tip-of-the-day-fuel-pumps.27797/invalid@example.com (Southernboy)Southernboy
Certainly worth a read as it explains in great detail the overall system components and how to test for correct functioning.

Link:- https://www.autoserviceprofessional...-the-basics-of-fuel-pump-diagnosis-and-repair]]>Tip of the day..Tue, 09 Apr 2019 13:03:52 +0000https://zroadster.org/threads/tip-of-the-day.27754/
https://zroadster.org/threads/tip-of-the-day.27754/invalid@example.com (Southernboy)SouthernboySee more from SKF
Vehicles make many sounds. Most are normal while the vehicle is in motion. But there are times when a noise coming from under the car can be a serious matter. Here are a few common “noises” that may come from the rear axle that need immediate attention:

• A “whirring”...

Tip of the day..]]>7P0340Sat, 06 Apr 2019 09:21:28 +0000https://zroadster.org/threads/p0340.27587/
https://zroadster.org/threads/p0340.27587/invalid@example.com (Southernboy)Southernboy
Anyone with any insights, please add to this post.

So far......

I watched the video you posted the link to. (Nefyn cat posted a ;ink to a video and below is the subsequent reply I made, and the action I have taken thus far.....)

P0340]]>10New Suspension Choices?Thu, 04 Apr 2019 21:41:21 +0000https://zroadster.org/threads/new-suspension-choices.27158/
https://zroadster.org/threads/new-suspension-choices.27158/invalid@example.com (gookah)gookah
Although they have been fine, I am now looking to change to something with a less harsh ride, as they all contribute to a great handling car, but all my dental fillings now seem to be in the footwell.
Still want it to be sporty hence Eibach pro kit, but don't want to keep apologising to the passenger when I go over a bump or hollow.
and no, I am not putting 11 inch wheels and balloon tyres back...

New Suspension Choices?]]>38Tip of the day.Tue, 26 Mar 2019 13:23:30 +0000https://zroadster.org/threads/tip-of-the-day.27509/
https://zroadster.org/threads/tip-of-the-day.27509/invalid@example.com (Southernboy)Southernboy
When I was leaving, he came out to see my Z3. I put the key in the ignition, and cranked the motor which took more than the usual one and a half turns to fire up. He commented on the fact that it didn't take immediately and said that if / when that happens, I shouldn't continue cranking. He told me to switch the ignition on and off 3 times form off to position...

Tip of the day.]]>1Cheap Performance TipsThu, 21 Mar 2019 02:24:10 +0000https://zroadster.org/threads/cheap-performance-tips.27380/
https://zroadster.org/threads/cheap-performance-tips.27380/invalid@example.com (Braz86)Braz86
Been looking through here for low cost ways to improve performance of my 2.0l Z3. Saw that @Lee mentioned an engine flush through a company, and @Dickymint mentioned a fuel additive that cleans injectors and carbon in the system. The post was from 4 years ago, so wondering how these have both been and if they worked?

I built a flow bench to measure the flow rate through the air filter box...

but this rig would only measure comparative differences.

So, I built another rig. The data from this rig can be used to calculate...

Air Filter Box Modification]]>19Z3 3.0i E85 suspension track day mods - advice pleaseWed, 09 Jan 2019 11:21:40 +0000https://zroadster.org/threads/z3-3-0i-e85-suspension-track-day-mods-advice-please.26543/
https://zroadster.org/threads/z3-3-0i-e85-suspension-track-day-mods-advice-please.26543/invalid@example.com (steverz4)steverz4
I've upped the brakes to EBC Yellow stuff, but would like to improve the suspension/shock absorbers
I've heard that the Eibach kit is a good one - don't want to go too hard core!!
Any advice or experience of this please? And also, regarding getting it fitted and set up properly, any experiences most welcome!!?
Or any other good set ups that can be recommended?
Cheers
Steve]]>CDV removalMon, 07 Jan 2019 23:26:51 +0000https://zroadster.org/threads/cdv-removal.26517/
https://zroadster.org/threads/cdv-removal.26517/invalid@example.com (Charles Perkins)Charles Perkins
Thank you so much for the mutual respect and assistance to all us Z3 owners throughout 20018!
My Z is a 2002 3ltr sports version. 50000K
Clutch has always been stiff.Have to let our considerabley before biting, however no slip.
I am considering replacing the clutch hose with a stainless steel hose and removing the CDV.
Looks like I can get the hose from Earles,over there.
It would appear that such an implementation will help ease the stiffness of the...